Abstract
The effect of spin polarization of electrons injected from a ferromagnet on the giant injection magnetoresistance was investigated for a ferromagnet-polymer-nonmagnetic metal experimental structure. The degree of spin polarization was varied by introducing a depolarizing nonmagnetic metal (Cu) layer between the ferromagnet and the organic transport layer. It was established that the coefficient of giant injection magnetoresistance depends significantly on the thickness of the depolarizing layer. In particular, the effect was not observed at a thickness larger than 12 nm and decreased exponentially at a smaller thickness as the thickness increased. The conclusion was drawn that the spin polarization of electrons plays a decisive role in the effect of giant injection magnetoresistance.
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Original Russian Text © A.N. Lachinov, N.V. Vorob’eva, V.M. Kornilov, B.A. Loginov, V.A. Bespalov, 2008, published in Fizika Tverdogo Tela, 2008, Vol. 50, No. 8, pp. 1444–1447.
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Lachinov, A.N., Vorob’eva, N.V., Kornilov, V.M. et al. On the role of spin polarization of electrons in the effect of giant injection magnetoresistance in the Ni-polymer-Cu system. Phys. Solid State 50, 1502–1505 (2008). https://doi.org/10.1134/S1063783408080192
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DOI: https://doi.org/10.1134/S1063783408080192